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Finding the Fourth Proportional to 620,154.60, 930,231.90 and 541,422.60

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Solution

The fourth proportional to 620,154.60, 930,231.90 and 541,422.60 is: 812,133.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,154.60 : 930,231.90 = 541,422.60 : x
  2. Step 2: Convert to fraction form
    620,154.60/930,231.90 = 541,422.60/x
  3. Step 3: Cross multiply
    620,154.60x = 930,231.90 × 541,422.60
  4. Step 4: Simplify right side
    620,154.60x = 503,648,573,900.94
  5. Step 5: Solve for x
    x = 503,648,573,900.94/620,154.60
  6. Step 6: Final answer
    x = 812,133.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.